Thermal Reduction of Magnetically Stabilized Ferrites Under Reduced Pressure
- Type: Conference Presentation
- Conference Type: AIChE Annual Meeting
- Presentation Date: October 30, 2012
- Duration: 30 minutes
- Skill Level: Intermediate
- PDHs: 0.50
Here, the feasibility of thermally reducing the mixed-metal ferrite structure at temperatures up to 1400˚C under vacuum is investigated. Reducing the reactor pressure effectively decreases the partial pressure of O2, resulting in a higher extent of reduction than is possible under atmospheric conditions. Since the need for a diluting inert gas to increase product yield is eliminated, a higher theoretical higher heating value efficiency is possible.
In addition to laboratory experiments, a reduced pressure solar thermochemical reactor capable of utilizing the novel mixed-metal ferrite structure has been designed. Results of testing performed using the University of Florida 42 kW solar simulator will be presented.
Mehdizadeh AM, et al., Enhancement of thermochemical hydrogen production using an iron-silica magnetically stabilized porous structure, International Journal of Hydrogen Energy (2012), doi:10.1016/j.ijhydene.2012.02.189